Waterproof wristlet watch

A typical example of a waterproof wristlet watch

An unrestored and original WWW manufactured by Eterna. Eterna produced an estimated 5,000 of the total 145,000 delivered.
Type	Manual
Display	Analogue
Introduced	1945

The watch wristlet waterproof was a type of watch manufactured in Switzerland and issued to British military forces after 1945. The (WWW) standard for wristwatches by the Ministry of Defence (United Kingdom) is believed to be one of the first official standards for a military issue watch.